Covering single leaf steel lintel on external wall

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Does anyone know how a steel lintel over a window on the outside leaf can be rendered over where the steel and padstone are 102mm wide. Is there a better way than chicken wire is the main question and keeping rain from penetrating through would be the next.
 
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Why has a steel lintel been used on an external leaf? If being rendered it’s usual to use a precast concrete one.
No issue then with getting the render to adhere or potential corrosion issues.

What type of lintel is it? Catnic type or an RSJ?
 
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Why has a steel lintel been used on an external leaf? If being rendered it’s usual to use a precast concrete one.
No issue then with getting the render to adhere or potential corrosion issues.

What type of lintel is it? Catnic type or an RSJ?
Its what the engineer wants. Its 3 metres span so I thought concrete was ok but he wants 178x102x19. There's a window above so not much weight.
I don't understand the question, and in not even crunk yet. o_O
Does what I've written above explain things?
 
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Does what I've written above explain things?
You mean a steel beam not a steel lintel.

Cement board, fixed to the web.

But if you have a supposed professional specifying a beam, then the professional thing to do is specify how it's finished - but above all he should be specifying a galvanized product if it's external.
 
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Its what the engineer wants. Its 3 metres span so I thought concrete was ok but he wants 178x102x19. There's a window above so not much weight.

Does what I've written above explain things?

Only brings up more questions really. I assume there is also a new steel on the inner leaf? If so, the usual thing to do is to have a steel plate welded to the bottom of the steel beam, bearing on to the inner leaf. This beam then carries all the load from both leaves, and the external leaf masonry is supported on the plate.

Still needs to be galvanised though. Is it too late to ask the engineer to change the design or am I missing something?
 
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You mean a steel beam not a steel lintel.

Cement board, fixed to the web.

But if you have a supposed professional specifying a beam, then the professional thing to do is specify how it's finished - but above all he should be specifying a galvanized product if it's external.
Only brings up more questions really. I assume there is also a new steel on the inner leaf? If so, the usual thing to do is to have a steel plate welded to the bottom of the steel beam, bearing on to the inner leaf. This beam then carries all the load from both leaves, and the external leaf masonry is supported on the plate.

Still needs to be galvanised though. Is it too late to ask the engineer to change the design or am I missing something?
He designed a plate originally. There's a few advantages to having the outer wall separately in my opinion so I asked him if this way is ok. He didn't say galvanised but didn't say not galvanised so maybe he's assuming im going to do it.
I think if it can't be concrete I'll go back to the plate. I take it that needs to be galvanised?
 
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Why can't you just get any standard lintel from a merchant that is long enough for that span?

The thing with engineers, is that they will just want to charge you for calculating a steel beam when in fact someone has already done that and they call them lintels, and they sell them in places ready made.
 
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It could be concrete. It’ll just end up quite big and heavy. Naylor lintels do load / span tables so if your engineer has worked out the loads already (which he must have) then it’s a simple case of reading off the tables to determine what size you need.
http://www.atspeed.co.uk/downloads/NAYLOR/naylor-product-brochure.pdf
I would imagine an R6 or R9 would do the job.
Thanks for that. On a side note I noticed 3m spans have a 150mm bearing, I always thought it was 200mm.
Why can't you just get any standard lintel from a merchant that is long enough for that span?

The thing with engineers, is that they will just want to charge you for calculating a steel beam when in fact someone has already done that and they call them lintels, and they sell them in places ready made.
The inner one has to be a steel to take a point load. Bolted to it in fact. You've seen the drawings a few weeks ago I think, my partner(work partner) put them up on here on another post which you commented on.
 
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